Stop mechanism for looms



Patented Mar. 7, 1922.

g INVENTOR.

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1. UUELLETTE.'

STOP MECHANISM. FOB LOOMS.v

APPLICATlON FILED MAY 1l., l-921.

UNITED srrss PATENT QFFICE.

JOHN B. OUELLETTE, OF NEW BEDFORD, MASSACHUSETTS.

STOP MECHANISM FOR LOOMS.

To all fui/1,0m t may concern:

Be it known that 1, JOHN B. OUELLETTE, a citizen of the United States, residing at New Bedford, in the county of Bristol and State of Massachusetts, have invented new and useful Improvements in Stop Mechanism for Looms, of which the following is a specification.

This invention relates to an improved stop mechanism for looms and has as its object to provide certain novel features in a stop mechanism 'of the type disclosed in my Patent No. 1,394,841.

In the application above referred to there is disclosed a stop mechanism comprising a hook member or kicker pivotally mounted upon the protector rod of a loom adapted to operate means uponl they breast-beam which is connected to the loom shipper-lever. The kicker is normally held in inoperative position, but is moved to position to actuate the shipper-lever operating` means when the shuttles are in certain defective and undesirable positions.

The present invention has as one of its objects to provide means for maintaining the kicker against movement longitudinally of the protector' rod.

Another objectr of t-he invention is to provide stop means for the rock'shafts which normally hold the kicker in operative position whereby, should the springs which act upon the rock shafts fail to function, the rock shafts will be held against accidental movement.

A still further object of the invention is the provision of means for strengthening the protector rod whereby the same may be held against vibration when the stop mechanism is applied to a loom.

The above are the principal objects of the invention, and they, as well as other objects of a more minute character, will become more clear as the description proceeds.

In the accompanying drawings there is shown a stop mechanism of the type disclosed in my copending application, having applied thereto one embodiment of my invention. j

In the drawings Figure 1 is an elevational view of the lay of a loom;

Figure 2 is a cross sectional view on the Specification of Letters Patent.

Patented Mar.v 7, 1922.

Application filed May 11, 1321. Serial No. 468,633.

Figure 3 is an elevational View of one of the members for holding the kicker against movement longitudinally of the protector rod; and j Figures 4 and 5 are partially cross sectional views on the lines 4-4 and 5 5 respectively, of Figure 1.

Referring to the drawings for a more detailed description, A indicates the lay of a loom having the usual shuttle boXeselO and protector rod 11. As shown in my copending application, there is pivotally mounted upon the protector rod a kicker 12 which is urged' to swing downwardly about the protcctor rod by a spring 13 and is held against this movement under ordinary uf'orking conditions of the loom` by means of rock shafts 14. having detector lingers 16, adjacent the shuttle boxes and formed with arms 17 positioned in front of the upwardly projecting` portion of the kicker. The rock shafts are held in the position shown in Figs. 1, 4 and 5,(by means of springs 18 secured tor the .lav and to adjustable collars 19 upon the rock shafts.

l/Vhen shuttlesare in boxes at each end of the racewaythey engage the detectory iingers 16, thereby rocking the shafts 14'and moving the arms 17 away from the kicker. The kicker is thereupon swung about the protector rod 11 by its actuating spring 13 to operate the stop mechanism.

The above described construction is disclosed and claimed in my 'copending application hereinbefore referred to.

Referring to Figs. 1 and 2, it will be noted that there is positioned on each side of the kicker a bracket 20, which may be secured to the lav at the rear of the protector rod by means of a screw 21. Each bracket is formed with a forwardly projecting arm 22, which extends beneath the protector rod beside the kicker. These brackets serve to prevent the kicker from moving longitudin ally of the protector rod in either direction. It will be understood that, ofcourse, other means might be used to accomplish this same purpose, but it is preferable that such means as is shown, which may be positioned at any place along the lay, be used for the reason that the selected position for the kicker will vary in different looms.

When my improved stop mechanism is applied to looms which are relatively wide,

it has been found that there is a tendency for the protector rod to vibrate, which condition, of course, itis desirable to eliminate. One form of means which may be employed to obviate this defective condition is shown more clearly in Figures 3 and 4E, and comprises hook-shaped members 23, 2l, secured to the lay by means of bolts l25 extending through their respective shank portions 23', 24. As will be observed, these members may be positioned on opposite sides of the kicker, one having its hook-shaped portion extending beneath, and partially around, the protector rod, and the other having its similar portion extending around the protector rod in the opposite direction. Obviously other means of a similar character might readily be employed to accomplish this purpose, although it will be-noted` that a particular advantage of the .specific means shown is that it maybe applied to the loom without,in any way, disturbing or removing the protector rod. Y

. In the practical use of the stop mechanism it has been found that the springs 18, which serve to hold therock shafts in the position shown in the several views, sometimes' break, become Adisconnected from the rock other reason. In such instances the rock y shafts` immediately pivot .in their bearings,

the detectors 16 and the arms 17 moving outwardly, away from the lay. Unless some V means is provided to prevent this accidental movement of the rock shafts there will result a bending or breaking of the detector fingers betweenthe lay and the breast-beam as the lay moves forwardly. In the accompanying drawings I have shown means suitable for accomplishing this purpose, the means comprising collars 26 having lugs 27, and held in position upon the rock shafts as by'means of the set screws 28. One of these stopsmay be located upon each rock shaft, and, as shown in Fig. 2, the stop is shown as moved to its lowermost position when both of the rock shafts are moved under defective shuttle conditions. Y

The position of the stops when the shuttles Vare properly operated is shown in dotted lines in Fig. 2, and by reference tolthis same figure, it will be noted that the distance from thc end of the stop to the protector rodill, when the mechanism is actuated to stop the loom, is, at all times, sufficient to permit proper operation'of the stop mechanism without interference of the rpd llpwith the stops 27. However, should either of the springs 18 break, the stops 27 will move with the rods 14; and engage the rodll.`

It should `be understood that the above detailed description `and the accompanying drawings are merely,illustrative7 and in no sense restrictive of the invention,I numerous modifications being possible without departing from the scope of the invention, which is more clearly defined in the following claims. i

Having thus described the invention, what is claimed as new is 1. A stop mechanism for looms, comprising in combination, a kicker pivotally mounted upon and freely movable relatively to the lo'om protector rod, and means positioned on each side of said kicker for preventing movement of said kicker longitudinally of the protector. rod, said means being applicable to the loom without removing the protector rod.

2. A stop mechanism for looms, comprising in combination, a lkicker mounted upon and freely movable relatively to the loom protector rod, and means secured to the lay and projecting forwardly to each side of said kicker for preventing movementl of said kicker longitudinally ofthe protector rod, said means being applicable to the loom without removing the protector rod.

3. A stop mechanism for looms, comprising in combination, a movable kicker, yielding means for normally holding said kicker in inoperative position, said means comprising a detector positioned adjacent the shuttle boX having means for obstructing the path of said kicker and 'spring means forA urging said `last-mentioned means against the kicker; anda stop operative to prevent. accidental movement of saiddetector when said spring means fails to function.

4. A stop mechanism for looms, comprising in combination, a movable kicker, a pair of rock shafts having arms normally positioned in the path of said kicker, yielding means fornormally maintaining said shafts and arms in position to hold said kicker inoperative, a shuttle box, detectors on each of said shafts, `and stops on said shafts for limiting their rocking movement when said yielding means fails to function.

5. A-stop mechanismfor looms, comprising in combination, a movable kicker, a pair of rock shafts having arms normally positioned in the path of said kicker, yielding vmeans for'normally'maintaining said shafts and arms in position to hold said kicker `inoperative, a shuttle boX, detectors on each of said shafts, and-adjustable stops on said shafts for limiting their rocking movement when said yielding means fails to function.

6. A stop mechanism-,for looms, comprising a kicker pivotally mounted upon the loom protector rod and freely movable relatively thereto, means for urging said kicker into a position to throw loom brake, a pair of rock shafts, each having means to hold said kicker in inoperative position, a detector adjacent the shuttle box, springmeans for said kicker inoperative7 and a stop upon said shafts for limiting their movement when said spring` means fails to function.

'7. A stop mechanism as specied in claim 6, having` means positioned on each side of the kicker for preventing movement thereoli longitudinally of the protector rod. 8. In a stop mechanism for looms, a member mounted upon the loom protector rod for movement relatively thereto and adapted 10 to throw into operation the loom brake, and a plurality of hook shaped members secured to the lay and extending above and below the protector rod to engage the latter and prevent the same from vibrating.

n testimony whereof I have hereunto set In hand.

y JOHN B. OUELLETTE. 

